Get the legal number intervals for seconds in a local date field:
var x = document.getElementById("myLocalDate").step;
Click the button to display the value of the step attribute of the local datetime field.
<!DOCTYPE html> <html> <body> Date: <input type="datetime-local" id="myLocalDate" step="5"> <button onclick="myFunction()">Test</button> <p id="demo"></p> <script> function myFunction() {//ww w .ja v a2s . co m var x = document.getElementById("myLocalDate").step; document.getElementById("demo").innerHTML = x; } </script> </body> </html>